class a()
{
b = 10
}
class c(a){
d = 20
}
q = c()
print(isinherited(c,a))
print(isinstance(q,c))
print(isinstance(q,a))
print(isbelong(q,a))
print(type(c))
print(type(q))
print(type(a) == type(c))
print(type(q) == type(c))